Control mechanism.



F. E. BAKER.

CONTROL MECHANISM. @EPLIGATION rum) 00m. 15. 1913.

Patented Dec 15, 1914.

-s SHEBTBAHEET 1.

Fig. l WITNESSES. \HVEHT'OR ATTORH EY P. E. BAKER.

CONTROL MECHANISM. APPLICATION PILED.0CT.15.1913.

1 1 20,664. Patented Dec. 15, 1914.

mro'nnav F. E. BAKER.

CONTROL MECHANISM. APPLICATION FILED00T..15.1913.

1,120,664. Patented Dec. 15, 1914.

3 SHEBTB-SHEET wrrnaspas 9 11,

ATTQRHEY To all whom it may concerns nnrrnn s'ra'rns PATENT oF IoE.

FRANK E.

BAKER-, QF ROYAL OAK, MICHIGAN, ASSIGNOR T'O DETROIT TRACTOR COM- PANY, OF LA FAYETTE, INDIANA, A CORPORATION OF INDIANA.

CONTROL MECHANISM.

Specification of Letters Patent. Patented Dec, 15, 1914,

Application filed October 15, 1913. Serial No. 795,203

Be it known that I FRANK E. BAKER, a

citizen of the United States, residing at- Royal Oak, county of Wayne, State of Michigan, have invented a certain-new and use ful Improvement in Control Mechanism, and dec are the tollowin to be a full, clear, and exact description or the same, such as will enable others skilled in the art to which it pertains to make and use the same, reference being had to the accompanying draw ings, which form a part of this specification.

This invention relates to gear shifting devices, also to gear shifting devices in connection with throwing 0d the power.

This invention also relates to mechanism for the control of a tractor by three reins.

In the drawings: Figure 1, is a plafi view of the mechanism in connection with the engine, clutch, and driving gears of a tractor. Fig. 2, is a similar View showing the parts at the time gears are changed. Fig. 3, is a detail part. I control. Fig. 4, is a section taken on the line Lar\. 3. Pi 5, is a section taken on the line ilk-l3 Fig. 3. Fig. 6, is a detail in' elevation of the spindle of the gear shifting control.

.The mechanism may be mounted upon any suitable pla arm or base, such as a. A large internal gcar traction wheel Z) is driven by a spur gear 0 that protrudes through the base a. Upon the same shaft as the spur gear, is a large reduction (Z. The counter sha'ft carries an idler c and a reverse gear 7'. The shifting gear 9 may be slid iiito' mesh with the reduction gear d for a forward drive or may be slid into engagement with the reverse gear for a reverse drive.

A fork i1. engages with the collar i to effect the shifting of the shifting gear g. In Fig. 1 this shittin gear is shown in neutral position. In Fig. 2 this gear is shown enters ing into mesh with the reduction gear (l. The fork It is a part of the bell-crank lever that is connected to a squared plate I: by the actuating rod Z. Rotation of this squared plate shifts the gear g back and forth upon its shaft, that is to say, the gear travels from a position of mesh with the large redu :tion gear (.Z into neutral position, thence into mesh with the reverse gear f, then back to neutral position and again into mesh with the large reduction gear (1, comin section of the gear shifting.

pleting a cycle of operation. The shifting inns-t alwaysjbe done in this cycle of opera- 1on.

The plate is is squared so that itmay have four positions of stoppage in' one'com'pl'ete rotation. A large retaining pawl m retains it in any one of the four given positions until this pawl is released. The release is e'ffected by simultaneous and'conjoint pull on the reins n and p. This swings the levers g and r that are connected by draw' bar's s w1 the bar t, that is pivoted to the main draw bar a. Independent pull on eithe'r of the reins n or p will only cause the bar t to swing upon its pivotal eonnectionfion the main bar u. This will do the steering for s. ch independent pull on either rein will swing the companion draw link '0 which will thereby turn a steering column of This steering column will effect the steering by means; which it is not necessary to describe in thisconnection as, of course, any oneof a number of known means might be employed. A large pawl m is swung back out of the way of the squared pawl by this conjoint pull on the two reins. See Fig. 2. The draw bar it is connected through a forked bell-crank lever w with the sliding part of the clutch y. The spiral spring 2 normally keeps the clutch parts in engagement and hence normally keeps the large wheel 3 which is held upon the spindle 4 by the shoulder 5 (Fig. 6). i The squared portion (3 of this spindle protrudes through.

squared openings in both the ratchet wheel and the plate, hence the two revolve together. A lever arm 7 carries a pawl 8 which engages with the ratchet teeth so that pull upon the rein 2 against the resistance of the spring 9 rotates the ratchet wheel one notch or one quarter of a turn,

as there are four ratchet teeth. The leverg 7 is keyed to a hub 10 (Fi 3). This hub carries a pin 11 (Figs. 3 and 5). The lower end of the spindle 4 is formed into anotched wheel 12 (Figs. 5 and 6). The notches 13 Where the gear is r ki'cksthe pawl 15 out the studded pawl 15 is to operate a temporary stop to prevent the plate is from bein'g swung more than a quarter'- at time. The operation of this temporary stop isas follows, Thelever '4' is keyed to the hub 10 which carries the :pin 11. The lever? through the pawlt? drives the ratchet wheel in one 'direction. Inasmuch as the ratchet wheel is squared on to the spindle 4, the notched wheel 12 and the. pin revolve together in clockwise direction in Fig. 5, but as soon as the pin 11 gets-to'the position shown in the; first dotted lines to the left of the fullline showing of this member in Fig. 5, the stud 14 is allowed toyieldingly ride upon the periphery of the notched wheel 12. It is obvious that'as soon as the next slot 13.comes adjacent the stud that'it will di opin and stop further revolution. This prevents an overthrow of the plate 70, that is, it means that no matter how quickly the rein2 is jerked the momentum will not carry the plate beyond-a quarter of a turn. When the third rein 2 is released, the spring 9 draws it back to, initial position. The pin 11' revolves backto its initial position and again so as to lift the stud 14: out of the adjacent notch of the notched wheel 12. During the return movement of the pin 11 the notched wheel has been stationary because it is connected with the ratchet wheel turn of the lever 7, this ratchet wheel is not actuated. In the low the plate. to revolve another quarter ofa turn when the pawl m has been released by a simultaneous and conjoint pull upon thetwo endsinand As already, expl'air'ied, simultaneous and;

conjoint pull on the-reins nand 79 releases the clutch from. the engine 18.. Thegears can now be shifted without injur ordinarily locked in a given position. by the pawl m. It has, however, already been explainedthat the simultaneous pull on the reins n andgralso releases the pawl m so that the gears are read T toshift. The shifting is easily. elfccted by pulling the rein 2. thereby rotating the plate just one quarter of a turn'by reason of the stop devices already, referred to. .Such a pull, when the parts are in .the position shown in 'Fig. 1, causes the shifting gear g to slide into mesh with the reduction gear (Z, (see Fig. s 1 -v shown in the act 0 3 and upon the rereturn position of the pin 11, the stoppdevice is in position to ale 3 and hence throws oil the power However, they are a steering element,

.lease the interlocking means for the insects.

ing into mesh with thereduction gear 5?. Another pull and the gear g'travels back to neutral. s Still another pull and the gear meshes with the reverse gear still another pull and the gear goes backto neutral. It is, therefore, apparent that the entire tractor may be controlled by these three reins,

for independent purl on the rein 9L can be made to causethetractor to steer to the right; an independent pullon the rain ,3) can he made to cause the tractor to steer to the left; a simultaneous pull on both reins can stop the machine by throwing out the clutch and it alsov places the parts in condition so that ,the gears may be sniited it desired.

If'it'is desired-to allow the machine to remainstationary for a minute, the shifting gear 9 may be thrown into neutral position and the clutch allowed to be thrown'in again so that pull will not have to be continued on the reins. v To again start forward the clutch willIhave-to be pulled out by conjoint pull on the reins. will have to be thrown in reverse, then back into: neutral and then again back into forward. This arrangement of reins allows the complete control of thetractor by these threereins which can be operated by one man'from some-distance. The operator may be seated upon'a plow, drag or other farm The shifting gear implement or, for that matter, the tractor might be used in connection with a wagon for the purpose of hauling loads. The operator may be seated anywhere necessary to control the levers of the implement that vis being used and at the same time he has complete control of the tractor.

WVhat I claim is 1. The combination with a power element, a gearing element, and a steering element, of a control device comprising three reins, two of which, when independently pulled, do the steering and when simultaneously pulled,.throw ofi the power, the aetuations of said third rein being adapted to change for'changmg the gears, substantially as described.

2. The combination with apow'er element, a gearing elemen*;. means for interlocking the gearing element of control means prising three movable members, whiclnwhen independently actuated, do the steering and when simultaneously and con jointly actuated, throw off the power and re gearing and the third actuator member being adapted to cause changes of the gearsin the gearing element when the same is released, si1hstantially as described.

3. The combination with a power clcnaent,

in given positions, and com; two of the gears of the gearing element, and means operated by merely pulling said third rein and a gearing element of QQi1$rQl deyige, 1a-e power an comprisin means for throwing ed the 51 for releasing the gearing element to allow changes therein, a rein, and means-for making all the changes in the gearing element when the said gearing has been released andt-hc rein is pulled, substantially as described.

at. The combination with a power element, a gearing element, and a steering element, of control means comprising a pair of reins, connections between the reins and the steering element for operating the steering ele-L and means operated by pulling. saidthird' rein to eflect the shifting of the gears, substantially as described.

5. The combination of a power element, a gearing element, a, steering element and means for locking the gearing element in given positions of control, means compris ing two reins, connections between the reins and power element for throwing off the power and for also operatin the means for interlocking the gears to re ease the same, the said connections operating only upon a simultaneous and conjoint pull of the two reins, the said reins being adapted when independently actuated to control the steering element and a third rein for shiftingthe gears of the gearing element when the same has been released, substantially as described.

6. The combination with a plurality of gears for giving different driving results and'a shifting gear, of a rein for operating the saine'and connections between the rein and the shifting gear, whereby at each pull of the rein, the shifting gear is made to take a new position, substantially as described.

7. The combination with a plurality .of

gears for giving different driving results and a shifting gear adapted to mesh with said gears, of a rein, a pawl attached to said rein, a ratchet operated when the pawl is oscillated by the rein and connections between the, shifting gear and the ratchet, whereby, at each movement of the ratchet, the shifting gear is caused to take up another position, substantially as described.

8. The combination with a plurality of gears for accomplishing different driving results, and a shifting gear, a rein, connec tions between the rem and shifting gear for causing the gear to take up another position at each pull of the rein, and means for 1n- -suring said gear taking its correct position at each pull of the rem, substantially as described.-

S). The combination with a set of gears for accomplishing different driving results and a shifting gea' adapted to take up various positions with respect to said set of gears, a

rein for causing said gear to take up a new' position when the rein is pulled, substantially as described.

10. The combination with a set of gears for accomplishing dili'erent driving results and a shifting gear operable to be brought into dill'erent positions with respect to the said gears, and a rein for causing said gear to assume a given cycle of positions with respect to the said set of gears, substantially .as described.

11. The combination with a set of gears, for accomplishing difl'erent driving results and a shifting gear adapted to take up various positions with respect to the set of gears, of a rein, a polygonal plate, means between the reins and plate for rotating the polygonal plate, connections between the polygonal plate and shifting gear for shifting the gear when the polygonal disk is rotated and a pawl engaging with the polygonal sides of the disk to maintain the 'shifting gear in a given position, substantially as described.

12. The combination with a set of -gea1's.

for accomplishing diil'erent driving results and a shii'tim car 0 )erable in connection i with the set of gears to assume various positions with respect thereto, of a rein, a polygonal plate, means for causing the rein to rotate the plate when the rein is pulled, connections between the polygonal plate and the shifting gear for causing the shifting gear to take a new position each time the plate is rotated a part off-a turn and means for preventing the overthrow of the disk beyond a given part of a turn wh .11 the rein is pulled, substantially as described.

13. The combination with a set of gears for acompiishing (lill'crent drivingresults and a shifting gear operable in connection with said gears and adapted to assume various positions with respect thereto, of a rein, a polygonal plate, means for imparting rotative movement to the plate when the rein is pulled, a pawl engaging with the polygonal sides of the plate for normally holding the plate in given positions, means for releasing the pawl, and means for preventing -the over-throw of the plate beyond a complete turn when the rein is pulled and the pawl is released, substantially as described.

14. The combination with a set of gears for accomplishing different driving results and a shifting gear adapted to assume various positions with respect to the said gears, of a rotatable member, a rein for giving the rotatable member a part of a turn at each pull on the rein, means for holding the rotatable member in given positions and connections between the rotatable member and shifting gear for causing the gear to'assiim.'ej ajnew position each time the rotatable member is given a part of a turn, snbstantially /as described.

' 15. The combination with a set of gears for accomplishing. difl'erent driving results as'hiftmg gear adapted to occupy various positions with respect to the said gears,

'of a rotatable member, a rein for giving the rotatable member a part rotation at each pull on the rein, means for preventing the overthrow of'tlie rotatable member beyond the desired part of complete turn at each pullof the rein and connections between the rotatable member and the shifting gear for causing the shifting gear to assume a new position at each pull on the rein, substantially as described.

1 6. The combination with a set of gears for accomplishing dilierent driving results and a shifting ear adapted to occupy different" positions with respect to the said gears,'of a rotatable member, a rein i'or giving the rotatable'member a part rotation at each pull 'on the i'ein,'mcans for holding the rotatable member in a given position, means by which. the last mentioned means may be released and-connect-hms between the rotatablc member and the shifting gear'for communicating the part rotatiiie movements of the rotating member to the shifting gear and for causing it to assume a diil'erentposition at each turn of the rotative member, substantially as described.

17.-'Tl ie combination with set of gears foi accomplishing diiierent driving results and a shifting gear adapted to occupy di'i ferent positions with respect to the said gears, of a rotatable member, a rein for giv ing the rotatable member part turns at each pull on the rein, means for holding the rotatable member in given positions, means by which the last mentioned means may be released, means for preventing the over throw of the rotatable member beyond agiven part of a complete turn when the rein is pulled and the aforesaid retaining inea-ns 'are released, and connections between the rotatable member'and the shifting gear for comnuinicating the part rotativc'inovements of the rotating'member to the shitting gear to cause that gear to take up a. new position" at each part rotative movement oithe rotative member, substantially as described.

18. In a control device for shifting gearsi by a rein,'the, combination of a-r'ein, arota+ I table member,ya ratchet attachedthereto, a-

pivoted lever attached to the rein, a pawl on said lever engaging With'the ratchet teeth,

a notched wheehp'ositi'vely connected with said ratchet wheeh a pawl provided-with a stud, and normally pressedagainst' the sar face of the notched Wheels'o that the studcan fall in the notches and stop the rotation of the ratchetawheel and a pin" positively connected with thesaid pivoted'lever and adapted, upon the return of-l'th'e' piifoted" lever from its actuating "stroke upon the ratchet Wlieel',"to kick the" said pawl out so that the stud'is lifted out of'the notch in'the notched Wheel to place the'notclied'wlieel in iiosition" to allow another actuation of the ratchet, substantially as'des'cribed" 7 19. In a vco'Iitroldeyicefor shifting gears. I by a rein, the c'ombinationof a; rein, a 'rota-' table member, 'a ratchet attached theretma pivoted lever attached to'tlie rein, apawl v on said lever engaging with the saidratchet teeth and means for preventing-the overthrow of the rotatable member at each pull on the rein so. as to insure being given'only the reins, substantially as described.

a prescribed part of a turn at each pull on In testimony whereof, I Sign this specili- I c :atio1i in the presence of two Witnesses.

- W'itnes'ses:

' STUART C. BARNES, Manin'rtra E. RUDD.

I FRANK B E J 

